<template>
  <div>
    <el-breadcrumb separator="/">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>商品管理</el-breadcrumb-item>
      <el-breadcrumb-item>商品分类</el-breadcrumb-item>
    </el-breadcrumb>
    <el-card>
      <el-row>
        <el-col>
          <el-button type="primary" @click="showAddCateDialog"
            >添加分类</el-button
          >
        </el-col>
      </el-row>
      <tree-table
        class="tree-table"
        :data="cateList"
        :columns="columns"
        :selection-type="false"
        :expand-type="false"
        show-index
        index-text="#"
        border
        :show-row-hover="false"
      >
        <template slot="isok" slot-scope="scope">
          <i
            class="el-icon-success"
            v-if="scope.row.cat_deleted === false"
            style="color: lightgreen"
          ></i>
          <i class="el-icon-error" v-else style="color: red"></i>
        </template>
        <template slot="order" slot-scope="scope">
          <el-tag v-if="scope.row.cat_level === 0">一级</el-tag>
          <el-tag v-if="scope.row.cat_level === 1" type="success">二级</el-tag>
          <el-tag v-if="scope.row.cat_level === 2" type="warning">三级</el-tag>
        </template>
        <template slot="operate" slot-scope="scope">
          <el-button type="primary" icon="el-icon-edit" size="mini"
            >编辑
          </el-button>
          <el-button type="danger" icon="el-icon-delete" size="mini">
            删除</el-button
          >
        </template>
      </tree-table>
      <el-pagination
        @size-change="handleSizeChange"
        @current-change="handleCurrentChange"
        :current-page="queryInfo.pagenum"
        :page-sizes="[1, 2, 5, 10]"
        :page-size="queryInfo.pagesize"
        layout="total, sizes, prev, pager, next, jumper"
        :total="total"
      >
      </el-pagination>
    </el-card>
    <el-dialog
      title="添加分类"
      :visible.sync="addCateDialogVisible"
      width="60%"
      @close="addDialogClose"
    >
      <el-form
        :model="addCateForm"
        :rules="addCateFormRules"
        ref="addCateFormRef"
        label-width="100px"
      >
        <el-form-item label="分类名称" prop="cate_name">
          <el-input v-model="addCateForm.cat_name"></el-input>
        </el-form-item>
        <el-form-item label="分类级别">
          <el-cascader
            v-model="selectedKeys"
            :options="parentCateList"
            :props="cascaderProps"
            @change="parentCateChange"
           clearable
           
          ></el-cascader>
        </el-form-item>
      </el-form>

      <span slot="footer" class="dialog-footer">
        <el-button @click="addCateDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="addCate">确 定</el-button>
      </span>
    </el-dialog>
  </div>
</template>

<script>
export default {
  created() {
    this.getCateList();
  },
  data() {
    return {
      cascaderProps: {
          checkStrictly:true,
        expandTrigger: "hover",
        label: "cat_name",
        value: "cat_id",
        children: "children",
      },
      selectedKeys: [],
      parentCateList: [],
      addCateFormRules: {
        cat_name: [
          {
            required: true,
            message: "请输入分类名称",
            trigger: "blur",
          },
          {
            min: 1,
            max: 6,
            message: "长度在 1 到 6 个字符",
            trigger: "blur",
          },
        ],
      },
      addCateForm: {
        cat_pid: 0,
        cat_name: "",
        cat_level: 0,
      },
      addCateDialogVisible: false,
      columns: [
        {
          label: "分类名称",
          prop: "cat_name",
        },
        {
          label: "是否有效",
          type: "template",
          template: "isok",
        },
        {
          label: "排序",
          type: "template",
          template: "order",
        },
        {
          label: "操作",
          type: "template",
          template: "operate",
        },
      ],
      cateList: [],
      queryInfo: {
        type: 3,
        pagenum: 1,
        pagesize: 5,
      },
      total: 0,
    };
  },
  methods: {
    getCateList() {
      this.$http
        .get(`categories`, {
          params: this.queryInfo,
        })
        .then((res) => {
          if (res.data.meta.status === 200) {
            this.cateList = res.data.data.result;
            this.total = res.data.data.total;
            console.log(this.cateList);
            console.log(this.total);
          } else {
            this.$message.error("获取分类失败");
          }
        });
    },
    handleSizeChange(newpages) {
      this.queryInfo.pagesize = newpages;
      this.getCateList();
      // console.log(1)
    },
    handleCurrentChange(currentPage) {
      this.queryInfo.pagenum = currentPage;
      this.getCateList();
      // console.log(2)
    },
    addDialogClose() {
        this.$refs.addCateFormRef.resetFields()
        this.addCateForm.cat_name=""
        this.selectedKeys=[]
        this.addCateForm.cate_level=0
        this.addCateForm.cate_pid=0
     
    },
       addCate() {
        this.$refs.addCateFormRef.validate( async valid=>{
            if(!valid){
                return
            }
            else{
                console.log(this.addCateForm)
              const {data:res} =await this.$http.post(`categories`,this.addCateForm)
              if(res.meta.status===201){
                  this.$message.success("添加分类成功")
                  this.getCateList()
                   this.addCateDialogVisible = false;
              }
              else{
                  console.log(res.meta)
                  this.$message.error("添加分类失败")
                   this.addCateDialogVisible = false;
              }
            
            }
        })
     
    },
    showAddCateDialog() {
      this.getParentCateList();
      this.addCateDialogVisible = true;
    },
    async getParentCateList() {
      const { data: res } = await this.$http.get(`categories`, {
        params: {
          type: 2,
        },
      });
      if (res.meta.status === 200) {
        this.parentCateList = res.data;
        console.log(this.parentCateList);
      } else {
        return this.$message.error("获取父级分类失败");
      }
    },
    parentCateChange() {
        if(this.selectedKeys.length===0){
            this.addCateForm.cat_level=0
            this.addCateForm.cat_pid=0
            return 
        }
        else if(this.selectedKeys.length===1){
            this.addCateForm.cat_level=1
             this.addCateForm.cat_pid=this.selectedKeys[0]
             console.log(this.addCateForm)
             return
        }
        else {
            this.addCateForm.cat_level=2
            this.addCateForm.cat_pid=this.selectedKeys[1]
            console.log(this.addCateForm)
            return
        }
     
    },
  },
};
</script>

<style lang="less" scoped>
.tree-table {
  margin-top: 15px;
}
</style>